646038 has 24 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 203904.

The previous prime is 646027. The next prime is 646039. The reversal of 646038 is 830646.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603 + ... + 1286.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2⁶⁴⁶⁰³⁸ is an apocalyptic number.

646038 is an abundant number, since it is smaller than the sum of its proper divisors (828162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646038 is a wasteful number, since it uses less digits than its factorization.

646038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 646038 is about 803.7648909974. The cubic root of 646038 is about 86.4475497010.

The spelling of 646038 in words is "six hundred forty-six thousand, thirty-eight".